doubly refracting material

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• Rochon prism — noun optical device that produces plane polarized ultraviolet light • Syn: ↑Wollaston prism • Hypernyms: ↑optical device * * * (ˈ)rō|shōⁿ noun Usage: usually capitalized R Etymology: after Alexis M. Rochon died 1817 French astronomer and optician …   Useful english dictionary

• quarter-wave plate — /ˈkwɔtə weɪv ˌpleɪt/ (say kwawtuh wayv .playt) noun a plate of doubly refracting material cut parallel to the optic axis of the crystal, of such a thickness that a phase difference of a quarter of a period is introduced between the ordinary and… …  

• phase plate — noun : a transparent plate of doubly refracting material that changes the relative phase of the components of polarized light …   Useful english dictionary

• industrial glass — Introduction       solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …   Universalium

• colour — /kul euhr/, n., adj. v.t., v.i. Chiefly Brit. color. Usage. See or1. * * * I Aspect of any object that may be described in terms of hue, brightness, and saturation. It is associated with the visible wavelengths of electromagnetic radiation, which …   Universalium

• Photon polarization — is the quantum mechanical description of the classical polarized sinusoidal plane electromagnetic wave. Individual photons are completely polarized. Their polarization state can be linear or circular, or it can be elliptical, which is anywhere in …   Wikipedia

• photoelasticity — photoelastic /foh toh i las tik/, adj. /foh toh i la stis i tee, ee la stis /, n. Physics. the phenomenon of double refraction of polarized light by a transparent substance under elastic stress, used to measure strain in elastic, transparent… …   Universalium

• birefringence — SYN: double refraction. * * * bi·re·frin·gence .bī ri frin jən(t)s n the refraction of light in an anisotropic material in two slightly different directions to form two rays bi·re·frin·gent jənt adj * * * n. the property possessed by some… …   Medical dictionary

• nebula — nebular, adj. /neb yeuh leuh/, n., pl. nebulae / lee , luy /, nebulas. 1. Astron. a. Also called diffuse nebula. a cloud of interstellar gas and dust. Cf. dark nebula, emission nebula, reflection nebula …   Universalium

• Orion Nebula — The entire Orion Nebula in visible light. Credit: NASA/ESA Observation data: J2000 epoch …   Wikipedia

• Cast — 1) A protective shell of plaster and bandage molded to protect a broken or fractured limb as it heals. 2) An abnormal mass of dead cells that forms in a body cavity. * * * 1. An object formed by the solidification of a liquid poured into a mold.… …   Medical dictionary